Emulsion of oil and the like.



NTTED STATEiFiATENT OFFICE.

OSCAR AUGUST HUBERT HUGO KOSTERS, OF HEMELINGEN, NEAR BREMEN, GERMANY.

EMULSION OF OIL AND THE LIICE.

Specification of Letters Patent.

Patented Sept. 24, 1907.

To all whom it may concem:

Be it known that I, OSCAR AUGUST HUBER'I HUGO Kos'rsns, a citizen of the German Empire, residing at Hemelingen, near Bremen, Germany, have invented certain new and useful Improvements in Emulsions of Oil and the Like; and I do hereby declare the following to be a full, clear, and exact description of the inven tion, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to the preparation of permanent emulsions of oils, fats and the like with water, and has for its object the production of a homogeneous emulsion which shall remain stable when cold and also at boiling temperatures.

Many attempts have been made to emulsify oils, fats and fatty substances with water so as to produce fully homogeneous and stable emulsions. For this purpose the oil or fat has been mixed with various kinds of soap. Another expedient has consisted in imparting to fats and fatty substances an increased tendency to take up water by mixing them with amids of the higher fatty acids or with acidyl derivatives of aromatic bases, the two being substantial equivalents for thepurpose. The emulsions made by aid of soaps have the disadvantage in practice that when gently warmed or when mixed with glycerin or another substance which raises the specific gravity of water, the oil or fat separates from the water and remains separated. When the emulsion is made byaid of substanceswhich increase the tendency of the fat or the like to take up water, even when an impracticably high proportion of the substance is added, only about 20 per cent of water can be incorporated with the fat, as above this limit a mere mixture of fat and water is formed. I

The present invention relates to a manufacture of emulsions of fats or oils containing any desired percentage of water, which remain quite stable in the cold or at the boiling point of water and when mixed with glycerin, for example, so thatthe applicability of the emulsions is much extended.

The manufacture consists in boiling an amid of a higher fatty acid, such as the amid of stearic acid, or an acidyl derivative of an aromatic base, such as the anilid of stearic acid, with water and introducing into this mixture the oil or fat, which is to be emulsified, together with a salt of a higher fatty acid By the introduction of the said salt the oil or fat, even at the boiling point of water, is emulsified completely and homogeneously with the amid or anilid mixture and on cooling, according to the degree of dilution, an emulsion is obtained having the consistency of an ointment, cream or milk and of permanent stability. The characteristic property of the emulsions produced in this manner as compared with all emulsions hitherto known,

is that the stability of the emulsion is quite independent of the proportion of water present, which property has long been an object sought.

The following examples illustrate the process.

Example 1. To make a thick yellow colored emulsion from stearamid and dark heavy cylinder oil,

400 grams of stearamid are boiled with 240 of the sodium salt of a fatty acid in 4000 of water; into the milky liquid thus obtained 2000 of heavy cylinder oil and i 4000 of hot water are poured.

10640 grams.

example may be followed with a substitution of 300 grams of stearanilid for 400 grams of stearamid.

As a part of the invention, the emulsions prepared by this process may be mixed with glycerin or another substance capable of raising the specific gravity of water.

In this manner the good effect of glycerin in certain apthey find employment Where former emulsions fell short, as, for instance, in the impregnation of textile fibers for the improvement of their spinning properties, the preparation of jute by subjection to heat, etc.

b. They readily take glycerin, and other substances which raise the specific gravity of water, without a separation of the constituent parts. This is of great advantage in the textile industry and has been for a long time unsuccessfully striven for, by reason of the fact that the glycerin insures a favorable condition of the fibers for spinning and improves the feel of the articles.

0. Furthermore, by the mixing of ammonium carbonate with the emulsion, a preservative is attained which, when used on the barrels of fire arms, avoids the injurious effect of nitro powders.

d. It adapts itself readily to the lubrication of moving parts of machinery, more or less exposed to heating, such as steam cylinders, as no hardening of the lubricant takes place.

e. The high degree of consistency of the emulsion makes the same valuable for the greasing of wool, because, on the one hand, the usual greasing apparatus in the spinning industry permits only viscid greasing substances to be employed, and, on the other hand, the emulsions of the present process are easily removable by washing and leave behind in the goods no greasy spots to affect the dyeing or detract from the appearance of the product.

f. The emulsions are entirely harlnless, as the'unsaponifiable and stable amids of the higher fatty acids as also the acidyl derivatives of the aromatic bases constitute entirely neutral bodies which are not subject to chemical decompositions 9. These emulsions can be freely used, in the presence of different salts, for the treatment, Without risk, of textiles which are later to come into contact with water containing limeand magnesia.

h. The lubricating effect of these emulsions is of a high order, as .the amids of the higher fatty acids as also the acidyl derivatives of the aromatic bases possess in themselves a fatty character.

1'. These emulsions are adapted, moreover, under suitable treatment, for use in medicine and in cosmetics. p

j. Also in soap manufacture as Well as in textile and paper printing these emulsions can be employedto advantage.

lc. The manufacture is inexpensive as, of the active ingredients which'in themselves are dear, but a small quantity is necessary-about 2% to,3% of the finished highly valuable emulsion.

1. Finally, the manner of manufacture is unusually simple apparatus imaginable sufiices.

Having thus fully described my invention what I claim as new and desire to secure by Letters-Patent is:

1. The process of producing stable emulsions of oils, fats and the like, which consists in heating a derivative of an organic compound and a salt of a higher fatty acid with Water and the oil to be emulsified.

2. The process of producing stable emulsions of oils, fats and the like, which consists in heating; a derivative of an organic compound and a sodium salt of a higher fatty acid with water and the oil to be emulsified.

3. The process of producing stable emulsions of oils, fats and the like, which consists in heating an amid of a higher fatty acid and a salt of a higher fatty acid with water and the oil to he emulsified.

4. The process of producing stable emulsions of oils, fats and the like, which consists in heating an amid of a higher fatty acid and an alkali salt of a fatty acid with water and the oil to be emulsified.

5. The process of producing stable emulsions of oils, fats and the like, which consists in heating an amid of a higher fatty acid and a sodium salt of a fatty acid with water and the oil to be emulsified, and adding glycerin thereto.

6. A water-emulsion of oil, fat or the like containing a derivative of an organic compound and'a salt of a higher fatty acid.

7. A water-emulsion of oil, fat or the like containing a derivative of an organic compound and a sodium salt of a fatty acid.

8. A water-enmision of oil, fat or the like containing an amid of a higher fatty acid and an alkali salt of a fatty acid.

H. A water-emulsion of oil, fat or the like containing the amid of stearic acid and the sodium salt of a fatty acid.

In testimony whereof I afiix my signature to this specification, in the presence of two witncsses.

OSCAR AUGUST nunmvr nuoo ra'is'runs.

Witnesses C. Dmmmrcn, F. Rmcu. 

